New observations of Betelgeuse with the Hubble Space Telescope show that warm gas from the supergiant's upper chromosphere is present inside its cold and dusty outer gas envelope. In this artist's impression of the upper chromosphere, shock waves from the star's huge pulsating surface traverse the chromosphere (shown in violet and blue colors) and enter into the cooler dust envelope (in orange and black). The waves produce the warm gas which mixes with the cold gas. Credit: Alex Lobel, Harvard-Smithsonian Center for Astrophysics.